Telescopic angle-adjustable electrotome

Abstract

The invention discloses a telescopic angle-adjustable electric knife which comprises a telescopic assembly and a knife body. The cutter body is arranged at the front end of the telescopic assembly; the telescopic assembly comprises a cutter handle, a worm, a rotary knob, a fixing sleeve, a telescopic gear, a worm gear and a rotating shaft. A round hole is formed in the center of the cutter handle, a fixing sleeve is arranged on one side of the round hole and rotationally connected with a worm, and a rotating shaft is horizontally arranged in the round hole. The center of the rotating shaft is provided with a telescopic gear, and one side is provided with a worm gear meshing worm; the upper end of the worm penetrates through the cutter handle and is provided with a knob; the rack is arranged at the front end of the cutter body to be meshed with the telescopic gear, so that the purpose that the cutter body slides and stretches in the cutter handle can be achieved, the cutter body can be circumferentially limited through meshing of the rack and the telescopic gear, and the problem that the circular cutter body rotates in the using process is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of postpartum medical devices, and particularly relates to a telescopically adjustable angle electrocautery knife. Background Art

[0002] An electrocautery knife, also known as a high-frequency electrocautery knife, is an electrosurgical instrument widely used in surgical operations. When the high-frequency high-voltage current generated at the tip of the electrocautery pen contacts the body, it heats the diseased tissue of the human body, causing the tissue to quickly dehydrate, decompose, and evaporate, thereby achieving cutting and hemostasis. The functions of the high-frequency electrocautery knife during surgery include rapid cutting, good hemostasis effect, simple and safe operation. Compared with traditional mechanical scalpels, using a high-frequency electrocautery knife can shorten the operation time, reduce the blood loss and blood transfusion volume of patients, and reduce surgical complications and costs.

[0003] Traditional circular electrocautery knives are prone to rotation during deep tissue operations, which not only affects the accuracy of the surgery but also may increase the surgical risk and the pain of the patient. At the same time, when facing different surgical situations, the length of the electrocautery knife cannot be adjusted according to the needs of the surgery, increasing the difficulty of the surgery. In addition, although some existing electrocautery knives provide an angle adjustment function, they are often complex to operate, not intuitive, and have a limited adjustment range, unable to meet the needs of complex surgeries.

[0004] Therefore, in view of the above technical problems, the present solution proposes a telescopically adjustable angle electrocautery knife. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention designs a telescopically adjustable angle electrocautery knife. By setting a worm and worm gear drive inside the handle and arranging a telescopic gear coaxially with the worm gear, when the worm and worm gear drive, the gears can rotate together through coaxial connection. At the same time, a rack is arranged at the front end of the knife body to mesh with the telescopic gear, so as to achieve the purpose of the knife body sliding telescopically inside the handle. Moreover, through the meshing of the rack and the telescopic gear, the knife body can be circumferentially limited, solving the problem of rotation of the circular knife body during use. In addition, a rotation assembly is arranged at the end of the knife body. The knife head is connected to the rotation assembly, and the inclination angle of the knife head can be adjusted according to the needs of the surgery during the operation, improving the surgical efficiency.

[0006] To achieve the above technical effects, the present invention is realized through the following technical solutions: A telescopically adjustable angle electrocautery knife, comprising: a telescopic assembly, a knife body;

[0007] The knife body is arranged at the front end of the telescopic assembly;

[0008] The telescopic component includes a tool handle, a worm, a knob, a fixed sleeve, a telescopic gear, a worm gear, and a rotating shaft; a circular hole is provided in the center of the tool handle, a fixed sleeve is arranged on one side of the circular hole to rotatably connect the worm, and the rotating shaft is horizontally arranged in the circular hole; the telescopic gear is arranged in the center of the rotating shaft, and the worm gear is arranged on one side to mesh with the worm; the upper end of the worm penetrates through the tool handle and is provided with a knob;

[0009] Further, the rotating shaft is arranged at the front end of the tool handle;

[0010] Further, the tool body includes a rack, a tool body, an oval head, a rotating component, and a tool head; the rack is arranged at the bottom of the front end of the tool body to mesh with the telescopic gear, and the oval head is arranged at the rear end of the tool body; the rotating component is arranged at the front end of the oval head to rotatably connect the tool head;

[0011] Further, the outer diameter of the tool body is the same as the inner diameter of the circular hole in the center of the tool handle;

[0012] Further, the rotating component includes a button, a telescopic rod, a spring, a sleeve, an outer gear, an inner gear, a rotating groove, and a telescopic groove; the rotating groove is arranged at the front end of the oval head; circular holes are symmetrically arranged at both ends of the rotating groove to arrange the inner gear, and the telescopic groove is arranged outside the inner gear; the sleeve is arranged at the front end of the tool head to rotatably connect the rotating groove; the sleeve is hollow and provided with a groove, and the spring is arranged inside; the telescopic rods are symmetrically arranged at both ends of the spring; the outer gear is arranged at one end of the telescopic rod close to the spring to mesh with the inner gear, and the button is arranged at one end away from the spring;

[0013] Further, the length of the outer gear is the same as that of the inner gear, and the length of the outer gear is half of that of the telescopic rod;

[0014] Further, the outer shape of the button is the same as the outer contour of the oval head.

[0015] The beneficial effects of the present invention are as follows:

[0016] In the present invention, a worm and worm gear transmission is arranged inside the tool handle, and the rotating shaft is arranged so that the worm gear and the telescopic gear are coaxially arranged. Thus, when the worm and worm gear are transmitted, the gears can rotate together through the connection of the rotating shaft. By arranging a rack at the front end of the tool body to mesh with the telescopic gear, the purpose of the tool body sliding and telescoping inside the tool handle can be achieved. And through the meshing of the rack and the telescopic gear, the circumferential limit of the tool body can be achieved, solving the problem that the circular tool body rotates during use;

[0017] Meanwhile, a rotating component is provided at the end of the blade body. The blade tip is connected to the rotating component, and during the operation, the tilting angle of the blade tip can be adjusted according to the operation needs. By pressing the two side buttons, the spring is pressed and contracted, so that the internal gear disengages from the external gear, and then the blade tip can be rotated. After the adjustment is completed, the buttons are released, and through the reset action of the spring, the telescopic rod pops out again, making the external gear and the internal gear mesh again, and then the blade tip can be locked in the current position, which can improve the operation efficiency. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below.

[0019] Figure 1 It is an overall structural schematic diagram of a retractable and adjustable-angle electric scalpel;

[0020] Figure 2 It is a structural schematic diagram of the blade body of a retractable and adjustable-angle electric scalpel;

[0021] Figure 3 It is a connection schematic diagram of the blade tip of a retractable and adjustable-angle electric scalpel;

[0022] Figure 4 It is a front view cross-sectional view of a retractable and adjustable-angle electric scalpel;

[0023] Figure 5 It is a cross-sectional view of the rotating component of a retractable and adjustable-angle electric scalpel;

[0024] Figure 6 It is a cross-sectional view of the handle of a retractable and adjustable-angle electric scalpel;

[0025] Figure 7 It is a partial schematic diagram A of a retractable and adjustable-angle electric scalpel;

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1 - telescopic component, 101 - handle, 102 - worm, 103 - knob, 104 - fixed sleeve, 105 - telescopic gear, 106 - worm gear, 107 - rotating shaft, 2 - blade body, 201 - rack, 202 - blade body, 203 - oval head, 204 - rotating component, 2041 - button, 2042 - telescopic rod, 2043 - spring, 2044 - sleeve, 2045 - external gear, 2046 - rotating groove, 2047 - internal gear, 2048 - telescopic groove, 205 - blade tip. Detailed Embodiments

[0028] The present invention discloses a telescopically adjustable angle electrocautery knife, comprising: a telescopic assembly 1 and a knife body 2; the knife body 2 is arranged at the front end of the telescopic assembly 1; the telescopic assembly 1 includes a handle 101, a worm 102, a knob 103, a fixed sleeve 104, a telescopic gear 105, a worm gear 106, and a rotating shaft 107; a circular hole is formed in the center of the handle 101, the fixed sleeve 104 is arranged on one side of the circular hole and rotatably connected to the worm 102, and the rotating shaft 107 is horizontally arranged in the circular hole; the telescopic gear 105 is arranged in the center of the rotating shaft 107, and the worm gear 106 is arranged on one side and meshes with the worm 102; the upper end of the worm 102 penetrates through the handle 101 and the knob 103 is arranged; by arranging a rack 201 at the front end of the knife body 202 to mesh with the telescopic gear 105, the purpose of the knife body 202 sliding telescopically in the handle 101 can be achieved, and through the meshing of the rack 201 and the telescopic gear 105, the knife body 202 can be circumferentially limited, solving the problem of the rotation of the circular knife body 202 during use.

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1

[0031] As shown in the attached Figure 1-7 figure, the knife body 2 is arranged at the front end of the telescopic assembly 1; the telescopic assembly 1 includes a handle 101, a worm 102, a knob 103, a fixed sleeve 104, a telescopic gear 105, a worm gear 106, and a rotating shaft 107; a circular hole is formed in the center of the handle 101, the fixed sleeve 104 is arranged on one side of the circular hole and rotatably connected to the worm 102, and the rotating shaft 107 is horizontally arranged in the circular hole; the telescopic gear 105 is arranged in the center of the rotating shaft 107, and the worm gear 106 is arranged on one side and meshes with the worm 102; the upper end of the worm 102 penetrates through the handle 101 and the knob 103 is arranged; the rotating shaft 107 is arranged at the front end of the handle 101;

[0032] The knife body 2 includes a rack 201, a knife body 202, an elliptical head 203, a rotating assembly 204, and a knife head 205; the rack 201 is arranged at the bottom of the front end of the knife body 202 and meshes with the telescopic gear 105, and the elliptical head 203 is arranged at the rear end of the knife body 202; the rotating assembly 204 is arranged at the front end of the elliptical head 203 and rotatably connected to the knife head 205; the outer diameter of the knife body 202 is the same as the inner diameter of the circular hole in the center of the handle 101;

[0033] The rotating assembly 204 includes a button 2041, a telescopic rod 2042, a spring 2043, a sleeve 2044, an external gear 2045, an internal gear 2047, a rotating groove 2046, and a telescopic groove 2048; a rotating groove 2046 is provided at the front end of the elliptical head 203; circular holes are symmetrically formed at both ends of the rotating groove 2046 to provide the internal gear 2047, and a telescopic groove 2048 is provided outside the internal gear 2047; a sleeve 2044 is provided at the front end of the cutter head 205 and is rotatably connected to the rotating groove 2046; the sleeve 2044 is hollow, and a spring 2043 is provided inside; telescopic rods 2042 are symmetrically provided at both ends of the spring 2043; an external gear 2045 is provided at one end of the telescopic rod 2042 close to the spring 2043 and meshes with the internal gear 2047, and a button 2041 is provided at one end away from the spring 2043; the length of the external gear 2045 is the same as that of the internal gear 2047, and the length of the external gear 2045 is half of that of the telescopic rod 2042; the outer end shape of the button 2041 is the same as the outer contour of the elliptical head 203;

[0034] In this embodiment, when the device is in use, by rotating the knob 103, the worm 102 is driven to rotate, so that the meshing worm gear rotates, the rotation of the worm gear drives the rotating shaft 107 to rotate, so as to drive the telescopic gear 105 to rotate, so that the telescopic gear 105 pushes the bottom rack 201 to expand and contract, so as to achieve the purpose of adjusting the length of the cutter body 202;

[0035] When it is necessary to adjust the tilt angle of the cutter head 205, by pressing the buttons 2041 at both ends, the spring 2043 is compressed, so that the telescopic rods 2042 at both ends retract into the sleeve 2044, so that the external gear 2045 disengages from the meshing of the internal gear 2047, and then the cutter head 205 can be rotated to adjust the angle. After the adjustment is completed, the buttons 2041 at both ends are released, and through the elastic reset effect of the spring 2043, the telescopic rods 2042 at both ends are pushed out, so that the internal gear 2047 can be re-engaged with the internal gear 2047, and the cutter head 205 is locked at the current angle;

[0036] In this embodiment, the outer end shape of the knob 103 is set to be the same as the outer contour of the elliptical head 203. When in use, the outer end shape of the knob 103 is set to be the same as the outer contour of the elliptical head 203, which can ensure that the contour of the whole device is smoother when it extends into the body, reduce the obstruction and damage to the internal tissues, and the doctor can rotate and adjust the angle of the electric knife more flexibly without being restricted by the shape difference between the knob 103 and the elliptical head 203;

[0037] In this embodiment, when the device was designed, the working principle of the electrocautery knife was taken into consideration. The high-frequency electrocautery knife generates a high-frequency high-voltage current at the tip of the electrocautery pen. When it comes into contact with the human body, it heats the diseased tissue of the human body, causing the tissue to quickly dehydrate, decompose, and evaporate, achieving cutting and hemostasis. Therefore, in this design, all adjustment components do not use electronic components, improving the safety of the device;

[0038] In this embodiment, traditional circular electrocautery knives are prone to rotation during deep tissue operations. However, through the meshing of the telescopic gear 105 and the rack 201, the telescopic and circumferential limiting of the knife body 202 are realized, effectively solving the rotation problem of the electrocautery knife during the operation, thereby improving the accuracy of the operation;

[0039] In this embodiment, by arranging a plurality of grooves in the sleeve and cooperating with the external gear, the grooves can rotate coaxially with the telescopic rod;

[0040] In this embodiment, through the transmission of the worm gear 106 and the worm 102 arranged in the handle 101, and a telescopic gear 105 arranged coaxially with the worm gear, and the rack 201 arranged at the front end of the knife body 202 meshes with the telescopic gear 105, the purpose of the knife body 202 sliding and telescoping in the handle 101 can be achieved. At the same time, the transmission structure of the worm gear 106 and the worm 102 is compact and ingeniously designed, suitable for devices with limited space, ensuring the overall compactness and portability of the electrocautery knife. The transmission of the worm gear 106 and the worm 102 also has a certain self-locking performance, which can prevent the sudden telescoping or rotation of the knife body 202 due to unexpected situations during the operation, increasing the safety of the operation;

[0041] In this embodiment, the rotation assembly 204 can adjust the tilt angle of the knife head 205 according to the surgical needs during the operation, improving the surgical efficiency, and can adapt to the angle adjustment of different surgical sites and surgical requirements, improving the flexibility and adaptability of the operation.

[0042] In summary, the present invention arranges the transmission of the worm gear 106 and the worm 102 in the handle 101, and sets the rotating shaft 107 so that the worm gear and the telescopic gear 105 are coaxially arranged. Thus, when the worm gear 106 and the worm 102 are transmitted, the gears can rotate together through the connection of the rotating shaft 107. By arranging the rack 201 at the front end of the knife body 202 to mesh with the telescopic gear 105, the purpose of the knife body 202 sliding and telescoping in the handle 101 can be achieved. And through the meshing of the rack 201 and the telescopic gear 105, the circumferential limiting of the knife body 202 can be achieved, solving the problem of the rotation of the circular knife body 202 during use;

[0043] Meanwhile, a rotating assembly 204 is provided at the end of the blade body 202. The cutter head 205 is connected to the rotating assembly 204. During the operation, the inclination angle of the cutter head 205 can be adjusted according to the surgical needs. By pressing the two side buttons 2041, the spring 2043 is pressed and contracted, so that the internal gear 2047 disengages from the external gear 2045, and then the cutter head 205 can be rotated. After the adjustment is completed, the buttons 2041 are released. Through the reset action of the spring 2043, the telescopic rod 2042 is ejected again, so that the external gear 2045 meshes with the internal gear 2047 again, and the cutter head 205 can be locked in the current position, which can improve the surgical efficiency.

[0044] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described.

Claims

1. A telescopic and angle-adjustable electric knife, characterized in that: include: Telescopic assembly, knife body; A knife body is arranged at the front end of the telescopic assembly; The telescopic assembly includes a tool handle, a worm, a knob, a fixed sleeve, a telescopic gear, a worm wheel, and a rotating shaft; a circular hole is opened in the center of the tool handle, a fixed sleeve is arranged on one side of the circular hole to rotatably connect with the worm, and a rotating shaft is arranged horizontally in the circular hole; a telescopic gear is arranged in the center of the rotating shaft, and a worm wheel is arranged on one side to mesh with the worm; the upper end of the worm penetrates the tool handle and is provided with a knob.

2. The telescopic and angle-adjustable electric knife according to claim 1, characterized in that: The rotating shaft is arranged at the front end of the knife handle.

3. The telescopic and angle-adjustable electric knife according to claim 1, characterized in that: The knife body comprises a rack, a blade, an elliptical head, a rotating assembly and a knife head; a rack is arranged at the bottom of the front end of the blade body to mesh with a telescopic gear, and an elliptical head is arranged at the rear end of the blade body; a rotating assembly is arranged at the front end of the elliptical head to rotatably connect with the knife head.

4. The telescopic and angle-adjustable electric knife according to claim 3, characterized in that: The outer diameter of the blade body is consistent with the inner diameter of the central circular hole of the handle.

5. The telescopic and angle-adjustable electric knife according to claim 1, characterized in that: The rotating assembly includes a button, a telescopic rod, a spring, a sleeve, an external gear, an internal gear, a rotating groove, and a telescopic groove; a rotating groove is arranged at the front end of the elliptical head; circular holes are symmetrically provided at both ends of the rotating groove to arrange an internal gear, and a telescopic groove is arranged outside the internal gear; a sleeve is rotatably connected to the rotating groove at the front end of the cutter head; the sleeve is hollow and a spring is arranged inside; telescopic rods are symmetrically arranged at both ends of the spring; an external gear is arranged on one end of the telescopic rod close to the spring to mesh with the internal gear, and a button is arranged at one end of the principle spring.

6. The telescopic and angle-adjustable electric knife according to claim 5, characterized in that: The length of the outer gear is consistent with that of the inner gear, and the length of the outer gear is half of the telescopic rod.

7. The telescopic and angle-adjustable electric knife according to claim 5, characterized in that: The shape of the outer end of the button is consistent with the outer contour of the elliptical head.

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